32
Instruction book
9096 3313 00
2.9 Air dryer
Flow diagram
Reference Name
AI Air inlet
AO Air outlet
1 Air/air heat exchanger
2 Air/refrigerant heat exchanger/evaporator
3 Condensate separator
4 Automatic drain / condensate outlet
5 Refrigerant compressor
6 Refrigerant condenser
7 Liquid refrigerant dryer/filter
8 Thermostatic expansion valve
9 Hot gas by-pass valve
10 Condenser cooling fan
11 Pressure switch, fan control
Compressed air circuit
Compressed air enters heat exchanger (1) and is cooled by the outgoing, cold, dried air. Water in the
incomingair starts to condense. The air then flows through heat exchanger/evaporator (2), where the
refrigerantevaporates, causing the air to be cooled further to close to the evaporating temperature of the
refrigerant. Morewater in the air condenses. The cold air then flows through separator (3) where all the
condensate is separatedfrom the air. The condensate is automatically drained through outlet (4).
The cold, dried air flows through heat exchanger (1) where it is warmed up by the incoming air
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